Fastest way would be to install 2.0ROM's if you're sure that's not what you got, plug in a CD to the A600 and then burn the stuff onto a CDR and then read the data on the A600. Might not be the fastest way to swap 5K of data but if it's several 100Mb then I'm not sure you want to nullmodem it over. Sure Fat95 is an alternative (found on aminet) if you're more into swapping HD's. ;-)
My A600 have a romswitch and both ROM2.05 and 1.3... sweeet. :-D
